SK Innovation has developed an anode active material for lithium secondary batteries, featuring a carbon-based particle with a silicon-containing coating layer and a carbon coating layer. The material shows improved initial discharge capacity and efficiency, with specific XPS measurements ensuring quality. GlobalData’s report on SK Innovation gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on SK Innovation, Battery management systems was a key innovation area identified from patents. SK Innovation's grant share as of March 2024 was 35%. Grant share is based on the ratio of number of grants to total number of patents.
Anode active material for lithium secondary battery with improved capacity
A recently granted patent (Publication Number: US11967705B2) discloses an innovative anode active material for lithium secondary batteries. The material includes a carbon-based particle with pores, a silicon-containing coating layer inside the pores or on the particle's surface, and a carbon coating layer containing a conductive polymer. Notably, the silicon-containing coating layer does not contain silicon carbide, and specific parameters such as the full width at half maximum (FWHM) of the O1s peak and the XPS Si2p peak area ratio are defined to ensure optimal performance. The carbon-based particle can be various materials like activated carbon, graphene, or carbon nanotubes, with an amorphous structure for enhanced properties.
Furthermore, the patent details the characteristics of the silicon-containing coating layer, emphasizing an amorphous or small crystallite size of silicon for improved battery performance. Parameters such as the crystallite size and peak intensity ratio in a Raman spectrum are defined to ensure the quality of the coating layer. Additionally, the carbon coating layer is applied uniformly, even in areas where the silicon-containing layer is absent, to enhance conductivity. The patent also extends to a lithium secondary battery incorporating this innovative anode material, along with a cathode, showcasing the practical application of the technology in energy storage devices. Overall, the patent highlights a novel approach to anode materials for lithium batteries, focusing on optimizing the structure and composition for enhanced performance and efficiency in energy storage applications.
To know more about GlobalData’s detailed insights on SK Innovation, buy the report here.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
